<?php
error_reporting(E_ALL);
if(preg_match('#/1(?:\s+)(\d+)(?:\s+)?(?:,+)?(?:\s+)?(\d+)(?:\s+)?(?:,+)?(?:\s+)?(\d+)#iu', $_TEXT, $res))
    {

        # $res[1] is Max Peak Power
        # $res[2] is Impedance
        # $res[3] is Crest Factor (log)

        $accuracy = 2; // число знаков после запятой

        $mpp = $res[1];
        $imp = $res[2];
        $crest = $res[3];

        ### Counting Max Peak Voltage
        $result['mpv'] = round(sqrt($mpp * $imp), $accuracy); // корень квадратный + округление до 4 знака

        ### Counting Crest Factor (lin)
        $result['crest_lin'] = round(pow(10, $crest / 20), $accuracy); // степень + округление

        ### Crest Factor
        $result['crest_factor'] = round($result['mpv'] / $result['crest_lin'], $accuracy);

        ### RMS Power Rating
        $result['rms_pr'] = round($result['crest_factor'] * $result['crest_factor'] / $imp, 0);


        ### 3dB Crest Factor (1.41:1)
        $result['3db_crest_factor'] = round($result['mpv'] * 0.707, $accuracy); // деление + округление

        ### 3 dB RMS Power Rating
        $result['3db_rms_pr'] = round($result['3db_crest_factor'] * $result['3db_crest_factor'] / $imp, 0);



        ### 6dB Crest Factor (2:1)
        $result['6db_crest_factor'] = round($result['mpv'] / 2, $accuracy);

        ### 6 dB RMS Power Rating
        $result['6db_rms_pr'] = round($result['6db_crest_factor'] * $result['6db_crest_factor'] / $imp, 0);



        ### 12dB Crest Factor (4:1)
        $result['12db_crest_factor'] = round($result['mpv'] / 4, $accuracy);

        ### 12 dB RMS Power Rating
        $result['12db_rms_pr'] = round($result['12db_crest_factor'] * $result['12db_crest_factor'] / $imp, 0);



        ### 16dB Crest Factor (6.3:1)
        $result['16db_crest_factor'] = round($result['mpv'] * 0.15848932, $accuracy);

        ### 16 dB RMS Power Rating
        $result['16db_rms_pr'] = round($result['16db_crest_factor'] * $result['16db_crest_factor'] / $imp, 0);


        $message  = '```';


        $message .= 'Max Peak Power:                    '.$mpp.' Watts Peak'.PHP_EOL;
        $message .= 'Impedance:                         '.$imp.' Ohms'.PHP_EOL;
        $message .= 'Max Peak Voltage:                  '.$result['mpv'].' Volts Peak'.PHP_EOL;
        $message .= PHP_EOL;

        $message .= 'Crest Factor (log):                '.$crest.' dB'.PHP_EOL;
        $message .= 'Crest Factor (lin):                '.$result['crest_lin'].':1'.PHP_EOL;
        $message .= 'Crest Factor:                      '.$result['crest_factor'].' Volts RMS'.PHP_EOL;
        $message .= 'RMS Power Rating:                  '.$result['rms_pr'].' Watts RMS'.PHP_EOL;
        $message .= PHP_EOL;

        $message .= '3dB Crest Factor (1.41:1):         '.$result['3db_crest_factor'].' Volts RMS'.PHP_EOL;
        $message .= 'RMS Power Rating:                  '.$result['3db_rms_pr'].' Watts RMS             Sine Wave'.PHP_EOL;
        $message .= PHP_EOL;

        $message .= '6dB Crest Factor (2:1):            '.$result['6db_crest_factor'].' Volts RMS'.PHP_EOL;
        $message .= 'RMS Power Rating:                  '.$result['6db_rms_pr'].' Watts RMS             AES/EIA Noise'.PHP_EOL;
        $message .= PHP_EOL;

        $message .= '12dB Crest Factor (4:1):           '.$result['12db_crest_factor'].' Volts RMS'.PHP_EOL;
        $message .= 'RMS Power Rating:                  '.$result['12db_rms_pr'].' Watts RMS            Pink Noise'.PHP_EOL;
        $message .= PHP_EOL;

        $message .= '16dB Crest Factor (6.3:1):         '.$result['16db_crest_factor'].' Volts RMS'.PHP_EOL;
        $message .= 'RMS Power Rating:                  '.$result['16db_rms_pr'].' Watts RMS            Music'.PHP_EOL;


        $message .= '```';
        sendMessage($_CHAT['id'], $message, 'Markdown');
    }